| Show past fast ships the immense power required to pro pel a vessel when aben a speed above twenty knots an hour is required Is realized says saya a technical journal by few people take for instance the british torpedo boat chasers which are mere racing machines even from a naval point of view the most perfect specimens of this class which have attained thirty knots speed carry sixty tons of coal which Is full one quarter of 1 their entire seagoing displacement they burn three and one half tons of coal per hour to attain the three knots over twenty seven which Is the highest speed of ordinary torpedo boats it was necessary to increase the fuel expends 1 ture fully 5 per cent |
